Air spray gun



FIG. 1 is a perspective view of an air spray gun showing our new design, on a reduced scale;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right side elevational view thereof. 

The ornamental design for an air spray gun, as shown and described. 